Dashboard Regions Weather Stations Radar Alerts Glossary
Contact About
Log In

Register for an account and never miss a forecast again!

Register

Avalanche Forecast

Archived

Mar 24th, 2023–Mar 25th, 2023

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

A stronger and deeper snowpack exists in the Yoho zone. Pay attention to shallower areas where the potential to trigger the deeper weak layers is more likely.

Confidence

Moderate

Avalanche Summary

No new avalanches were observed or reported Friday.

Snowpack Summary

Surface sun crusts exist on solar aspects to near ridgetops and up to 2000 m on shady aspects. The mid and lower snowpack is stronger and more settled in this region due to the deeper snowpack, but continue to pay attention to shallower areas that will display a weaker snowpack.

Weather Summary

A North Easterly flow will affect the forecast region this weekend. Increased cloud cover and light precipitation will begin Friday night with snowfall accumulation values of 5-10cm (more to the East). Daytime High freezing levels will climb to 1700m. Ridgetop winds will remain in the light to Moderate range.

Terrain and Travel Advice

  • Uncertainty is best managed through conservative terrain choices at this time.
  • Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.

Problems

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.